{"id":90513,"date":"2020-08-02T01:42:20","date_gmt":"2020-08-01T23:42:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-x-org-server-i-libx11"},"modified":"2020-12-03T09:15:07","modified_gmt":"2020-12-03T07:15:07","slug":"uyazvimosti-v-x-org-server-i-libx11","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/uyazvimosti-v-x-org-server-i-libx11","title":{"rendered":"Vulnerabilidades no X.Org Server e libX11","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dupla de falhas encontradas no X.Org Server e libX11 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/xorg-announce@lists.x.org\/msg01260.html\">duas<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/xorg-announce@lists.x.org\/msg01259.html\">no aplicativo para Windows, que permitia ao usu\u00e1rio elevar seus privil\u00e9gios no sistema para administrador (a vulnerabilidade foi causada pela intera\u00e7\u00e3o inadequada entre o cliente GUI sem privil\u00e9gios e o servi\u00e7o de sistema).<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2020-14347\">CVE-2020-14347<\/a><\/noindex> \u2014 a falta de inicializa\u00e7\u00e3o de mem\u00f3ria ao alocar buffers para mapas de pixels usando a chamada AllocatePixmap() pode levar a um vazamento de dados de mem\u00f3ria da pilha para um cliente X, quando o servidor X opera com privil\u00e9gios elevados. Esse vazamento pode ser explorado para contornar a tecnologia de randomiza\u00e7\u00e3o de espa\u00e7o de endere\u00e7o (ASLR). Combinado com outras vulnerabilidades, o problema pode ser utilizado para criar um exploit para eleva\u00e7\u00e3o de privil\u00e9gios no sistema. Corre\u00e7\u00f5es est\u00e3o dispon\u00edveis na forma de patches.<br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/xorg.freedesktop.org\/archive\/individual\/xserver\/\">Publica\u00e7\u00e3o<\/a><\/noindex>  da vers\u00e3o corrigida do X.Org Server 1.20.9 \u00e9 aguardada nos pr\u00f3ximos dias.<\/li>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2020-14344\">CVE-2020-14344<\/a><\/noindex> \u2014 um estouro de inteiro na implementa\u00e7\u00e3o do XIM (M\u00e9todo de Entrada) na libX11, que pode resultar em corrup\u00e7\u00e3o de \u00e1reas de mem\u00f3ria na pilha ao processar mensagens malformadas de m\u00e9todos de entrada.<br \/>\nO problema foi corrigido no lan\u00e7amento <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/xorg-announce@lists.x.org\/msg01261.html\">libX11 1.6.10<\/a><\/noindex>.<\/li>\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53470\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 X.Org Server \u0438 libX11 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438: CVE-2020-14347 &#8212; \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435 \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0438 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u0438\u0438 \u0431\u0443\u0444\u0435\u0440\u043e\u0432 \u0434\u043b\u044f \u043f\u0438\u043a\u0441\u0435\u043b\u044c\u043d\u044b\u0445 \u043a\u0430\u0440\u0442 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0432\u044b\u0437\u043e\u0432\u0430 AllocatePixmap() \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0443\u0442\u0435\u0447\u043a\u0435 X-\u043a\u043b\u0438\u0435\u043d\u0442\u0443 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u043f\u0430\u043c\u044f\u0442\u0438 \u0438\u0437 \u043a\u0443\u0447\u0438, \u043a\u043e\u0433\u0434\u0430 X-\u0441\u0435\u0440\u0432\u0435\u0440 \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0441 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u043d\u044b\u043c\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u044f\u043c\u0438. \u0423\u043a\u0430\u0437\u0430\u043d\u043d\u0443\u044e \u0443\u0442\u0435\u0447\u043a\u0443 \u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0434\u043b\u044f \u043e\u0431\u0445\u043e\u0434\u0430 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u0440\u0430\u043d\u0434\u043e\u043c\u0438\u0437\u0430\u0446\u0438\u0438 \u0430\u0434\u0440\u0435\u0441\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432 (ASLR). \u0412 \u0441\u043e\u0447\u0435\u0442\u0430\u043d\u0438\u0438 \u0441 \u0434\u0440\u0443\u0433\u0438\u043c\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u043c\u0438 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-90513","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 X.Org Server \u0438 libX11 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0434\u0432\u0435\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta 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